Ore concentrating device



- Jan. 29, 1935. NEWTON ORE CONCENTRATING DEVICE Filed April 18 1932 2Sheets-Sheet 1 Jan. 29, 1935. M. M. NEWTON 1,989,494

ORE CONCENTRA'I'ING DEVICE I Filed April 18, 1952 2 sheets-sheet 2 Fllhl lln In;

Patented Jan. 29, 1935 ORE CONCENTRATiNG p'EvtcE; Merle 1. Newton,Colorado Springs; Colo; Application April 18, 1932,-Seri al' 605,848:

2 Claims. (cuts-26 This invention relates to improvements inconcentrating devices of the type employed for thepurposesofconcentrating ores so as to separate the gangue from themetallic values, but which can also be employedfor; other uses. a

' It is'an object of this'invention to'produce a concentrating device ofsuch designthat it can he -constructed of any size desired andwhich canthereforebemade so small that it, can be readily transported on-a packhorse if necessary.

' Another object.ofthis invention is toproduce a: table whose: surfaceshall'be' so constructed that; it-will have several flat panningsurfaces separatedby parallel riflies and-whose manner of operationshall resemble that; of the ordinary panning operation-employed by earlyplacer miners: t

It isaa further object ofthis invention to produce a device thatcanbe'operated by an electric motor; or byra' small internalcombustionengine, and whichtcan alsobe operated'by'hand; if= necessary.1

VIt. is a' still. further object of this invention to produceaconcentrating' table which shall be so.-meuntedthat it can reciprocatein'the direction of the riffies: and in which the reciprocating-means issoconstructedthat theamplitude of I vibrationrof the: table. will exceedthe eccentricity'ofthegcampr eccentric by means of which 3thervibrationsrareeffected.

Theiabove and other objects which may-become apparentasrthe:deseriptionproceeds are attained by means of:. a-voonstr-uction and an arrangementof parts that will-now be 'describedxinr-detail, ref- 35 erenceforthis'purpose being'had to the-accompanying drawings in which -thepreferred embodiment of the invention has been illustrated, andinwhich:

Eig; 1 isflatop-plan view ofthe machine; 2 'is'a-side-e1evationof:themachine,- parts thereof being broken away;

Fig; 53. is a top plan View of the frame;

4 .Eig Lis-a, section taken on line 44, Fig. -1,-

top plan view isshown' in Fig; 1; The supportingframe isprovidedwithside members land 2, which are connected by means'of diagonal'framemembers 3 and 4; and-by brace members 5, 6,- 7

and sr This-frame has secured to its under side a 'plu-- ralityofblocks9 which restupon the'support-' ingsurface 10. Secured to'the upperside of" thedframe are bloeks 11', 12' and 13'. Supports l4 aresecuredtothe outside of theframe by' means of bolts 15; which extendthrough elon-r gated openings ldinlthe supports and which hold thelatter adjusted: position. Secured tothe inner surface of each of thesesupportsis a brack et having a projecting portion 11 which has athreadediopening for the reception of the set screw 18. The lower end'ofthisscrew rests ona plate 19-.carriedby the uppersurface of block 9 =andthe screw is employed for adjusting the position 1 of the supportsinleveling the table. 20 Secured to oppositesides ofthe supports 14 areplates ZO-and 2=1:in:whichthe rollers 22 are journ'alledl Theserollersserveto "support the-table which will now bedescribed; table consists ofa frame-havingside members-23 and 2e and end-members25; A central member'26 'is'located half way between members 23' and '24 and the spacebetween :member 26andthe outside frame members is filled by planks-27nThe-tableis pro vided along one side: with an upwardly extend ingwall-28 and upwardly extendingi'end walls 29 and: 30. The table isslightly longer than it is wide and the ends: are inclined with respectto the sides-so that the'table'has the general appearanceofa diamondor arhombi Secured to the-underside of the side members 23 and 24' arechannels 31 which-rest on the rollers 22- and form-tracksinwhich therollers move-. The's'id'e 28 isrconnectedwith side 29 byameans 'of'atsho'rt piece 32 which is inserted at" this" point for the purpose :ofprovidinga suitable space for-the feed' hopper 33. The' bottom' of thisfeed hopper is spaced a shortdistance from the: inner surface of side 28and from the" innerisurface' of side 32=scas to form an't shaped opening34, through which the material is'fed ontothe upper sur face of thetable. In the embodiz'nent shown the table is covered bymeans'of a sheetof copper which has been designated by reference numeral 35 and whichhas'been provided with a plurality of parallel-spaced riflles 36.- Thesurface between these riflies is preferably fiat andthe-rifliesterminate a-short distance from the inner side of end wall*so as to leave a flat strip along; this wall and this strip hasbeenr-des ignated by reference numeral 3'7. A pipe 38 extends from thehopper 33 to the outer end of end wall 30, and this pipe is provided onits inner surface with openings through which water sprays 39 emerge.These sprays are directed against the inner surface of the walls and thewater will flow in a uniform sheet over the sur-'- face of the tabletowards the open side thereof in the general direction of arrows 40.Water under pressure is supplied to the pipe 38 through a hose 41. Theend wall 30 is provided near its outer end with an opening 42, whichcommunicates with the interior of a box or receptacle which is formed bya bottom member 43, side member 44 and end walls 45. The copper plate 35extends into this box or receptacle and forms the bottom thereof. Thebottomofthisbox is provided with a longitudinal depression 46 which isadapted to contain mercury 47. Deflectors 48 are inserted through theopening and extend into the pathway of the moving concentrates andserve'to direct them into the receptacle where they will be retained andwhere the metallic parts thereof will become amalgamated with themercury The table is adjusted so that the corner indicated by A is thehighest point on the table, and that indicated by B is the lowest point.The table is usually adjusted so that it is upwardly inclined from thefeed hopper towards -the end 30 but it may be on a level in alongitudinal direction but must always be inclined from sidewall 28towardsthe open side.

For the purpose'of reciprocating the-table, I have provided a shaft49which' is mounted for rotation in bearings '50. This shaft carries a cam51, which is preferably made of rubber composition that' hasbeen-clamped between metal plates 52. A beltwheel 53 is secured to oneend of the shaft and power can be applied to this wheel by means of abelt which is connected with a'motor or an internal combustion engine.Located on each side of the cam are guide members 54 thatare providedwith'slots 55 through which the shaft extends. A roller 56 is mountedfor rotation between the guides 54 and contacts with the outer surfaceof the cam. Two connecting rods 57 extend from the guides 54 to thecross bar 58. This cross bar is supported on a threaded bar 59 whoseendsare secured to the under side'of the table by means of brackets 60. Abracket 61. is connected with the supporting frame and extends upwardlybeyond the bar 59 and has an opening through which this bar projects. Aspring 62 encircles the bar 59 and has one endabutting the bracket 61. Anut 63, which is threadedly connected withthe bar, serves as anabutment. for the other end of the spring. "A spring'64 is located onthe side of the'eross bar 58 which is nearest to the cam and one end ofthis spring is engaged by nut '65 threadedly connected'with the bar; Onthe other side'of this crossbaris another spring which has beenindicated by numeral 66 and which extends between the cross barand the'nut'67. The springs 62 and 64 are quite strong while spring 66 is muchlighter. The result of' having spring 66 lighter will be explainedhereinafter;

Let us now assume that the parts have been assembled in the manner shownand described and that shaft 49 is rotated at a certain speed in thedirection shown in- Fig. 6. This cam has a portion'thereof nearer to thecenter and therefore as it rotates the roller 56'will be moved awayfrom' shaft 49 and this will carry with it the table. The forceexerted-by the rotating cam will be transmitted to the table by thecross bar 58 and the spring 64, and will be resisted by spring 62, whichabuts the bracket 61. The spring 66 exerts its force in opposition tospring 64 and the latter will, therefore, be compressed more than itotherwise would be by a given force applied by the connecting rods 5'7.When the cam has rotated to the position shown in Fig. 6, spring 62 willmove the table towards the right and after a short time the table willstart reciprocating at a rate corresponding to the speed at which thecam rotates. As the table with its load has a considerable amount ofinertia, its amplitude of vibration will be greater than theeccentricity of the cam for the reason that the springs by which it isconnected to the frame and to the cross bar 58 will yield and permit thetable to travel in either direction after the cross bar 58 'has stoppedmoving, and in this manner the effect of the cam will be multiplied toan appreciable extent.

Let us now assume that the table is in operation and that pulp is fed tothe hopper 33. This pulp will pass through opening 34 onto the table andwill pass along the table. The water that is delivered to the tablethrough pipe 38 will flow crosswise of the table and carry away thelight portions of the pulp. The heavier parts of the pulp, such as themetallic values therein, will pass along the fiat surfaces between theriflles and will be subjected to an action similar to the panning actionthat takes place when an ordinary miners pan is used. The greaterportion of the values will flow between the side wall 28 and the rifiles36, and will pass along the flat border 37 until'it strikes the firstdeflector 48 and will then pass into the box 43. As water willcontinually circulate through this box the gangue that is carriedthereinto will be removed by the action of this water. By having severaldeflectors, it is possible to more accurately adjust the infiow andoutflow and thereby secure a better cleaning action within the box 43than could be obtained with a single deflector.

From the above description it will be apparent that I have produced aconcentrating device of a simple and substantial construction that canbe readily transported to any place where it is to be used and whichsubjects the material to a panning action that very effectivelyseparates the valuable from the nonvaluable materials.

Although this device is intended primarily for use in connection withmineral ores it can also be employed for separating dry materials.

Owing to the fact that this machine has broad fiat surfaces between therifiies and that the reciprocation takes place in the direction of theriffles, I find that it is possible to separate gold of all sizesincluding the so-called flour gold, and that it is also possible toeffect a separation of dry materials although, for the best results,-water should be employed in connection therewith.

Having described the invention what is claimed as new is:

1. In a device of the type having a supporting frame and a movablemember located above the frame and mounted for rectilinear movement,means for reciprocating the movable member in the direction of itslength, said means comprising a cam rotatably secured to the frame, athreaded rod located below the movable member and extending therealongin the direction of the length of the movable member, a bracket securedto the frame and projecting upwardly therefrom; said bracket having anopening through which the rod extends, a spring (62) surrounding the rodon the side of the bracket farthest from the cam, one end of the springabutting the bracket, a nut threadedly connected with the rod and heldin engagement with the other end of the spring, two spaced nuts securedto the rod on the side of the bracket nearest the cam, a cross barslidably connected with the threaded rod between the two nuts, a springinterposed between each side of the cross bar and each of the last namednuts, the spring between the cross bar and the bracket being weaker thaneither of the other two springs, a connecting rod secured to each end ofthe cross bar, said connecting rods extending across the shaft to whichthe cam is secured and a roller mounted for rotation between the ends ofthe connecting rods, said rollers contacting with the cam whereby whenthe cam is rotated the movable member will be reciprocated.

2. In a device of the type having a supporting frame, and a movablemember located above the frame and supported for rectilinear movement,means for reciprocating the movable member in the direction of itslength, comprising a cam rotatably secured to the frame, a rod locatedunderneath the movable member with its axis parallel to the direction inwhich the movable member moves, means for securing the ends of l the rodto the movable member, a bracket secured to the frame and provided withan opening through which the rod extends, the rod having a threadedportion adjacent the bracket, a nut on the threaded portion, acompression spring located between the bracket and the nut for exertinga force tending to move the movable member in one direction, aconnecting rod having one end provided with a roller which is positionedto engage the cam, means for guiding the end of the connecting rod thatis adjacent the cam, a cross head carried by the other end of theconnecting rod, the cross head having an opening through which thethreaded bar extends, a spring carried by the bar on opposite sides ofthe cross head and abutments for the ends of the spring for holding themunder compression whereby the movable member can move in eitherdirection relative to the cross head.

MERLE M. NEWTON.

